comboboxmenuexample.java

自制java的swing组件

package zb.swing;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

/**
 * @version 1.0 05/10/99
 */
public class ComboBoxMenuExample
    extends JFrame {

  public ComboBoxMenuExample() {
    super("ComboBoxMenu Example");

    String[] itemStr = {
        "name", "Red", "Blue",
        "number", "255,0,0", "0,0,255",
        // separator
        "system", "control", "controlHighlight", "controlShadow",
        "text"
    };

    JMenuItem[] menuItems = new JMenuItem[7];
    menuItems[0] = new JMenuItem(itemStr[1]);
    menuItems[1] = new JMenuItem(itemStr[2]);
    menuItems[2] = new JMenuItem(itemStr[4]);
    menuItems[3] = new JMenuItem(itemStr[5]);
    menuItems[4] = new JMenuItem(itemStr[8]);
    menuItems[5] = new JMenuItem(itemStr[9]);
    menuItems[6] = new JMenuItem(itemStr[10]);

    JMenu[] menus = new JMenu[4];
    menus[0] = new JMenu(itemStr[0]);
    menus[1] = new JMenu(itemStr[3]);
    menus[2] = new JMenu(itemStr[6]);
    menus[3] = new JMenu(itemStr[7]);

    menus[0].add(menuItems[0]);
    menus[0].add(menuItems[1]);
    menus[1].add(menuItems[2]);
    menus[1].add(menuItems[3]);
    menus[3].add(menuItems[4]);
    menus[3].add(menuItems[5]);
    menus[2].add(menus[3]);
    menus[2].add(menuItems[6]);

    JMenu menu = ComboMenuBar.createMenu(menuItems[0].getText());
    menu.add(menus[0]);
    menu.add(menus[1]);
    menu.addSeparator();
    menu.add(menus[2]);

    ComboMenuBar comboMenu = new ComboMenuBar(menu);

    JComboBox combo = new JComboBox();
    combo.addItem(itemStr[1]);
    combo.addItem(itemStr[2]);
    combo.addItem(itemStr[4]);
    combo.addItem(itemStr[5]);
    combo.addItem(itemStr[8]);
    combo.addItem(itemStr[9]);
    combo.addItem(itemStr[10]);

    getContentPane().setLayout(new FlowLayout());
    getContentPane().add(new ComboPanel("Fake ComboBox", comboMenu));
    getContentPane().add(new ComboPanel("ComboBox", combo));
  }

  class ComboPanel
      extends JPanel {
    ComboPanel(String title, JComponent c) {
      setLayout(new FlowLayout());
      setBorder(new TitledBorder(title));
      add(c);
    }
  }

  public static void main(String args[]) {
    ComboBoxMenuExample frame = new ComboBoxMenuExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    frame.setSize(370, 100);
    frame.setVisible(true);
  }
}